Vulcanizer



R; MACDONALD;

vuLcAmzER. APPLICATION FILED'PR. 142, |919.

Patented Mar. 28, 1922.

satana RBERTMACDONALD, or scHENEcrAnY, NEW'YORK, Assmann, BY iiffinsuwis Assiem- MENTS, T FREDERCK 'W'. MANGOLD, OF SCHENECTADY, NEW' YORK.

vULcANrznn.

Specification of Letters '.latent.

latented Pillar. 28, 16122.

Application led April 12, 1919. Serial No. 289,539.

Schenectady, county ot Schenectady, and

State of New York, lhave invented certain new and useful Improvements in Vulcanizers, 0'1": which the Jlollowing'is a specification.

Reference may be had to the 'accompany-k ing drawing, andthe reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein.

This invention relates to portable vulcanizers adapted for making repairs tothe inner tubes of pneurntic tires and similar articles. Y

lThe principal object of the invention is "to provide in compact portable form, a vulcanizer` adapted'for the repair of cuts 'extending 1n various directions, 1n an inner vtube 'of a vpneumatic tire or the like.

Other objects will appear in connection with the following description;

Fig. 1 of the Adrawing is a top plan view of my improved vulcani'zer.

Fig. 2 is a central vertical longitudinal section of the same.

Fig. 3 is a view in perspective ot -a vulcanizing element for the use of which my improved vulcanizer is particularly adapted.

Fig. 41: is a central vertical longitudinal section of the same.

Referring to the drawings wherein the invention is shown in preferred form, 1 is a base-plate of elongated form, and 2 is an arm extending longitudinally of, and overhanging, the base-plate, 1, to which it is hinged at one end at 3.

The other end of the base-plate, 1, is provided with an open slot, 4, and the other end of the arm, 2, has pivoted thereupon at 5, a yoke, 6, through which extends a screw-bolt, 7, having on its lower screw-threaded end a Wingnut, 8, said screw-threaded portion of the bolt being adapted to swing into and out of the open slot, 4, and the wing-nut, 8, to be screwed into engagement with the bottom of the base-plate, 1, when the screw-bolt is within the slot, 4.

Rotatively mounted at 9 on the base-plate, 1, is a clamp-member, 10, in the form of an elongated plate adapted, for storage or transportation, to occupy a position extending longitudinally of the base-plate, 1, while being adapted in use to be rotatively adjust ed in any desired angular position with rcspect'to the plate, 1. Y

A cooperative clamp-member, 11, in the form of a spider is rotatively mounted at 12, upon the arm, 2, said spider having two oppositely projecting legs, 13, longer than its other legs, the diameter of the spider measured along the legs, 13, being substantially equal tothe long diameter of the clampplate, 10, while the shorter diameter oi the spider is substantially'equal to the shorterv diameter of the clamp-plate, 10.

The spider, as well as the clamp-plate, 10, can thus be arranged with its longer diameter extending longitudinally of the baseplate, 1, for convenience in transportation and rstorage and *when both oi' said clampmembers, 10 and 11, are thus arranged, they require a space `no greater in width thanthat required by the base-plate, 1.

For certain purposes of the invention, the form of theseveral clamp-members, 10 and 11, may be varied within the scope' of the appended claims. l' i I' have-shown a'preferred form of clampmcmber, 11, suitable for use with a vulcanizing element shown in Figs. 3 and el, comprising a pan, 14, containing combustible material, 15, and bearing on. its bottom a patch, 16, adapted for making the repair.

No claim is made herein to such a vulcanizing element, such elements being supplied to the trade in various forms and sizes.

The spider, 11, is adapted to cooperate with such vulcanizing elements when placed in various positions upon a flattened inner tube which rests upon the clamp-plate, 10, at substantially right angles to the baseplate, l.

In the use 0l` the device, the tube to be repaired is placed upon the clarnpsplatc, 10, with the tube extending at substantially right angles to the base-plate, 1, and the clamp-plate, 10, is rotatively adiustedso that it extends longitudinally of the cut to be repaired, which cut is covered by a vulcanizing element of the type described which is arranged to extend longitudinally of the cut, and the clamping spider, 11, is rotatively adjusted so that its long diameter extends longitudinally of the clamp-plate, 10.

The arm, 2, is then swung downward to* is tightly screwed up to clamp the vulcaniz- 1 ing element against the upper` side ot' the innei` tube with whatever torce 1s desired.

The combustible material is then ignited,l

and serves to produce `the necessary heat for vulcanization, as is well understood.

In the preferred form of my invention as shown the legs of the spider, 1l, are open or channeled on the under side, thus aii'ording asubstantial engagement with the upper side of the vulcanizing element while providing along the legs of the spider a fluespace for the free 'passage of air to, and gases oi combustion from, the combustible material, 15. Y

' Vvhat I claim as new and desire to secure by Letters Patent isl. In a device of the class described and in combination, a base; an elongated cla1npplate rotatably mounted upon the base; an arm hinged to one end of said base over* hanging the base; a clamping-member rotatably mounted upon said arm concentrically with said elongated clamp-plate, said clampplate and said clamping-member being mounted with freedom for similar movements each through an arc of substantially 180D; a screwconnection between the other end of said arm and the base.

2. lIn a device of the class described and in combination, a base having a clampmember, and an overhanging arm; a clamping-spider mounted upon said arm having its legs channeled on the other side, and

means whereby said spider can be forced toward said clamping-member on the base. Y

3. In a device of the class described and in combination, an elongated base;-an elon gatedclamp-plate rotatively mounted upon theV base; an arm overhanging said base; a clamping spider rotatively mounted upon said arm, certain oppositely projecting legs oit vsaidspider being longer than its other legs; and means whereby said spider can be forced toward said clamp-plate.

4. In a device of the class 4described and in combination, an elongated base.; an elongated clamp-plate rotatively mounted upon the base; an arm hingedto one end of said base overhanging the base; a clamping spider rotatively mounted upon said arm, certain oppositely projecting legs of said spider being longer than its other legs; and a screw-connection between the other end of said arm and the base. Y

5. In a device of the class described and in combination, an elongated base; anelongated clamp-plate rotatably mounted upon the base; an arm hinged to one end of said base overhanging said clamp-plate; a clamping-spider rotatably mounted upon said arm concentrically with said clamp-plate, said spider having legs channeled on the underside, certain oppositely projecting legs of the spider being longer than its other legs; and a screw-connection between :the other end of said arm and therbase.

In testimony whereof, I have hereunto'set my hand this 31st day 'of March, 1919.

ROBERT MACDONALD. Y 

